Catch-pulley for curtain-cords.



PATENTED JAN. 13, 1903. A C. M. PRAMPTCN.

CATCH PULLEY PCR CURTAIN CCRDS.

APPLIOATIQN FILED JAN. 22, 1902.

N0 MODEL. A

- ear 12.

NITED 'STATES PATENT @Ferca GEORGE M. FRAMPTON, OF PENDLETON, INDIANA.

CATCH-'PULLEY FOR CURTAIN-CORDS.

SPECIFICATION forming part of Letters Patent No. 718,447, dated January 13, 1903.

` Application led January 22, 1902. Serial No. 90,776. (No model.)

To @ZZ whom, t may concern.-

IBe it known that I, GEORGE M. FRAMPTON, a citizen of the United States, residing at Pendleton, in the county of Madison and State of Indiana, have invented a new and useful Catch-Pulley Block for Curtain or other Cords, of which the following is a specification.

My invention relates to an improvement in means for engaging and holding curtain or other cords at any desired point of adjustment.

The object of my invention is to produce a simple and easily-manufactured pulley and` casing for the purpose described which will positively and automatically engage a curtain or other cord at any desired point and hold the same.

The accompanying drawings illustrate my invention.

Figure 1 is a perspective view of a preferred form of my device. Fig. 2 is a similar View with portions broken away, the pulley being shown in the position where4 the cord is held against movement. Fig. 3 is a View similar to Fig. 2, showing the positionwhen the cord is free. Fig. 4 is a rear end elevation. Fig. 5 is a perspective viewof adouble pulley constructed in accordance with my invention. Fig. 6 is a development of a blank from which the casing shown in Figs. 1, 2, Shand 4 may be formed from a single'piece of sheet metal.

A pulley or roller 7 is provided for about half its length on its periphery with an axial rib 8, the remaining length of the periphery of the roller being left free from obstruction. The pulley is rotatable upon a pin 9, which is supported in a casing which is preferably composed of a single sheet of metal bent into abox-like form, as shown in the drawings. This casing consists of two sides 10 Vandr11, each of Which is provided with a perforated Between sides 10 and 11 is an end'13, which is provided at its lower side through about half its length with an inclined edge 14, which leads tothe straight edge 15, a blunt wedge-shaped opening 16 `being thus formed in the lower side of the end. Extendperforated ear 2 0. Projecting from the lower edge of the supplemental vend 19 is a bottom 2l, having a notch 22 cutin one side thereof. The outer end of bottom 21 is bent down to form a lip 23. Formed in the top edge of end 17 and supplement-al end 19 are notches 24, which register when the blank is folded into shape. Formed at the point of bend between side 10 and end 17is a perforation 25,1;hrough which lthe perforated ear 20 is projected when the blank is folded. Sides 10 and 11 are each provided with a perforation 26, adapted to receive the ends of pin 9.

In assembling the blank shown in Fig. 6 is folded at the several dotted lines, so as to form a box having an open top. The lip 23 of bottom 21 projects far -enough toward the end 13 to insure the engagement of the cord 28 with the beveled edge 14 of the front end 13, and notch 22 forms an opening immediately below the smooth portion of the pulley 7, so as to provide a guide for the weight end of the cord. l

In folding the` blank, ear 2O is projected through slot 25, thus holding the bent blank in shape and stiffening the same without the use of rivets. Notches 24 form an opening through which the Weight end of the cord may pass, as shown in dotted lines in Fig. 3, when the pulley is to be used in connection with `skylight-curtains, &c.

In Fig. 5 I have shown a construction capable of use in connection with two cords 29 29. In this form the blunt wedge-shaped notch in the end 13' is duplicated, thus forming at the center of the end a V-shaped tongue 30, each side of which forms an inclined edge 14. Two rollers 7 7' are then provided, each with an axial rib 8', and the adjacent ends of the rollers are left unobstructed.

In operation the weight is carried by that portion of the cord which passes either down through notch 22 or passes out through notches 24, and as the cord is drawnovper the plain portion of the pulley by the weight its passage'over lip 23 (or the spring inherent in the cord) brings the free end of the cord in engagement with the inclined edges 14, and the free end of the cord is therefore deiected by the incline and forced over toward the edge 15, where it is caught between said edge and the rib 8. A downward force applied to ICO the free end of the cord immediately releases the cord, and the weight end of the cord may be lowered by the operator merely exerting a slight outward force against the free end of the cord, so as to overcome the action of the inclined edge la.

It will of course be understood that rib 8 projects far enough from the periphery of roller 7 so that there is not sufficient space between its end and the casing when the cord is in the position shown in Fig. 2. It will be readily understood also that the casing may be of any other suitable form, so long as it is provided with the equivalent of the inclined edge 14, and that the casing need not necessarily be formed of bent sheet metal.

I claim as my invention- 1. In a catch-pulley block, the combination with a roller having a rib parallel to its axis carried by the periphery thereof, of a holder therefor having a portion adapted to coperate with the rib, and an inclined edge leading toward said portion at an angle to the axis of the roller.

2. In a catch-pulley block, the combination with a pulley having a rib parallel to its axis carried by the periphery and extending a portion of its length, of a holder for said pulley7 having a portion adapted to cooperate with said rib, and means carried by said casing for engaging a cord passed over the pulley so as to force the free end of the cord automatically into position to be clamped between the rib and casing when the cord is drawn over the pulley in the direction of the other end of the cord.

3. In a catch-pulley block, a pulleycasing having a wedge-shaped notch formed in one side thereof With an inclined edge 14, a pulley mounted in said casing, and an axial rib carried by that portion of the pulley opposite the apex of the wedge-shaped notch, substantially as and for the purpose set forth.

fi. In a catch-pulley block, the combination with a roller carrying a rib, of a casing consisting of a strip of metal folded into a foursided box-like casing and having a wedgeshaped notch formed in the lower edge of one of the sides, substantially as and for the purpose set forth.

5. In a catch-pulley block, the combination with a roller carrying a rib, of a casing consisting of a strip of metal folded into sections 10, 11,13, 17, and 19 with the sections 17 and lf) overlapping, ears IS and 2O projecting from the ends of the strip, a notch 25 through which the ear 2O may be projected, ears 12 projecting from the tops of sections 10 and 11, wedge shape notch 1G formed in the lower edge of section 13 and a tongue 21 projected from the lower edge of section 19 and having a notch 22 formed therein, substantially as and for the purpose set forth.

6. In a catch-pulley block, the combination with a roller having a rib parallel to its axis carried by the periphery thereof along a portion of its length only, and a holder for said roller having a portion adapted to cooperate with the rib whereby a cord passed around the roller may be thrown thereby automatically into position to be pinched between the holder and rib.

GEO. M. FRABIIPTON.

TWitnesses:

ARTHUR M. Hoon, BERTHA M. BALLARD. 

